I'm assuming this is the case where they are working in an existing codebase written by other humans. I've been in this situation a lot recently, and Copilot is

I'm assuming this is the case where they are working in an existing codebase written by other humans. I've been in this situation a lot recently, and Copilot is a pretty big help to figure out particularly fiddly bits of syntax - but it's also really stupid suggests a lot of stuff that doesn't work at all.